Synthesis of Polyhydroxysteroids. V. Preparation and Infrared Spectra of 16β, 20α-Isopropylidenedioxysteroids.

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概要

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• It was found that 16β, 20α-dihydroxysteroids react with acetone in the presence of a small quantity of boron-trifluoride etherate giving the 16β, 20α-isopropylidenedioxy compounds in good yield, the method being useful for a selective protection of the 16β, 20α-dihydroxyl groups. By this method a number of 16β, 20α-isopropylidenedioxysteroids, which exhibit a characteristic infrared bands at 9,10,11 and 11.8μ, were prepared.

• 公益社団法人日本薬学会の論文
• 1963-02-25

著者

• 野口 俊作

  Central Research Division Takeda Chemical Industries Ltd.

• 野口 俊作

  Research Laboratories, Takeda Chemical Industries, Ltd.

• 森田 桂

  Research Laboratories, Takeda Chemical Industries, Ltd.

• 貴志 豊和

  Research Laboratories, Takeda Pharmaceutical Industries, Ltd.

• 三木 卓一

  武田薬品中央研究所化学研究所

• 野口 俊作

  Research Laboratories Takeda Chemical Industries Ltd.

• 森田 桂

  Chemical Research Laboratories, Research and Development Division, Takeda Chemical Industries, Ltd.

• 貴志 豊和

  武田薬品研究所

• 那波 速男

  Research Laboratories, Takeda Chemical Industries, Ltd.

• 三木 卓一

  Research Laboratories, Takeda Chemical Industries, Ltd.

• 森田 桂

  Chemical Research Laboratories Research And Development Division Takeda Chemical Industries Ltd.

• 平賀 謙太郎

  Research Laboratories, Takeda Chemical Industries, Ltd.

• 森田 桂

  Research And Development Division Takeda Chemical Industries Ltd.

• 那波 速男

  Research Laboratories Takeda Chemical Industries Ltd.

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